Wood-burning stove



(No Model.) 2 SheetsShet 1.

E. H. HUENEFELD.

WOOD BURNING STOVE.

No. 601,565. Patented Mar. 29, 1898 2 Sheets-Sheet 2.

(No Model.)

B. H. HUENEFELD. WOOD BURNING STOVE.

Patented Mar. 29, 1898.

Tu: uomzls PETERS co) Pncro-unaou WASHINGTON, n. c.

UNITED STATES ERNST H. HUENEFELD ATENT Prion.

, OF CINCINNATI, oIIIo' WOOD-BURNING STOVE.

To all whom, it may concern.-

Be it known that I, ERNST H. HUENEFELD, of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in WVood-Burning Stoves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in wood-burning stoves, the object of the invenbeing to provide a heater of simple and economical construction and one in which the fire-pot or cylinder and outer jacket are so located with relation to each other as to provide for the free and uniform circulation of air within the heating-space between the firepot and cylinder.

With these ends in view my invention consists in the parts and combinations of parts, as will be more fully described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in elevation of a stove embodying my invention. Fig. 2 is a view in horizontal section thereof. Fig. 3 is a view in vertical section taken through the front and rear of the stove, and Fig. 4 is a view in plan.

A represents theouter jacket, preferably rectangular longitudinally and square transversely. This jacket is made of suitable sheet metal and surrounds and contains the cylindrical fire-pot B. This fire-pot is retained equidistant from the sides of the outer jacket by the spacing-braces a at the bottom and by the draft-flue and by the spacing-collars connecting the two parts at the fuel or feeding opening 0 and the smoke-flue or offtake D. The fire-pot is closed tightly at its base, which terminates in a plane slightly above the lower end of the outer jacket and is closed at all points except at the point of attachment of the draft-flue and fuel and smoke openings.

. The upper end or the fire-pot terminates slightly below the top of the outer jacket, and hence it will be seen that the air entering the base of the stove passes up between the outer jacket and inner fire-pot, becomes highly heated, and escapes from the space at Patent N0. 601,565, dated March 29, 1898.

Serial No. 645,240. (No model.)

the four corners of the top, which is perforated at these points for the escape of the hot air. By making the outer jacket square and the fire-pot cylindrical air-spaces of considerable size are formed at the four corners and the air rises in large volumes, while the spaces between the corners are considerably reduced in width and hence operate to rapidly heat the air passing up at these points.

with a top E removed from the top E of the outer jacket an air-space between the latter is formed, which absolutely prevents the top E from becoming overheated, as it would do if it formed the top of the fire-pot also.

The stove rests on legs F, which elevate the outer jacket sufficiently above the floor to permit of the free passage of air upwardly and around the fire-pot.

The draft-flue G comprises a square or rec tangular cast frame H, adapted to rest between thefire-pot and outer jacket, the edge or end adjacent to the fire-pot being curved to conform to the shape of the portion of the fire-pot against which it abuts, while the outer end, which consists of a removable plate I, held in the frame H by screws, rests against the inner face of the jacket and is secured thereto by the screws 01, which secure the damper-plate in place. From this it will be seen that this draft-flue, in addition to supplying air to the fire-pot, also serves as abrace to stiffen the fire-pot and jacket and a spacing-block to hold them in their proper relative positions. The rear concave face h of the frame H is provided near its lower end with an opening h, which corresponds with a similar opening in the fire-pot. The edges of the opening in the fire-pot are reinforced by the cast-metal frame K, which latter is held in place by the bolts is, passing through said frame and through the fire-pot and rear wall or face of the frame H. This frame K protects the sheet-metal opening from damage by contact with logs of wood thrown into the stove. The frame H is provided at its outer upper end with openings covered by the ornamental damper-frame J and closed by the damper J. From this it will be seen that the air passing through the damper-plate enters the hollow cast-metal frame If and By providing the fire-pot or inner cylinder,

passes downwardly therein toward the lower end of the latter and from thence into the firepot for the purpose of supporting combustion.

The smoke-flue coupling connecting the top of the fire-pot and the top of the outer jacket consists, primarily, of an oval cast metal spacing collar or sleeve M, provided near its lower end with an integral flange m, which latter rests on the top E of the fire-pot B, the lower end of sleeve passing through an opening in said top. This opening is reinforced by the cast-metal oblong ring m which latter is secured in place by the bolts 01'. screws m Resting onthe flange m is the spacingsleeve m having a flanged upper end, which latterrests against and supports the top of the outer jacket, the walls of the opening in top of the jacket being reinforced by the oblong cast-metal ring 117,. These partsto wit, the two reinforcing-rings 097, m the tops E and E, and the flange mare all secured together by the two bolts or screws m and the sleeve M, top-plate of the fire-pot, and reinforcing-ring m are further secured together by the bolts or screws m With this construction it will be seen that a practically airtight joint is formed, thus preventing the escape of smoke at this point. In addition to this it braces the two tops and absolutely prevents any change in the relative positions of said tops.

The feed or fuel opening of the stove comprises a spacing-ring L, flanged at its two ends, one flange resting on the top plate of the fire-pot and the other against the lower side of the top plate of the jacket. This ring is of the same diameter as the fuel-openings in the top plate of the jacket and fire-pot and is secured to both plates by the sheet-metal clamping-rin g L, which latter is located within the ring L and may be riveted thereto. This inner ring is flanged at both ends, the lower flange Z taking under the edge of the top plate of the fire-pot and clamping the ring L to the fire-pot and the upper flange overlapping the top plate of the jacket and the flange N of the top ring N. This top ring N rests on the top of the jacket, and hence it will be seen that by turning down the upper flange of the clamping-ring L into the lower flange of the top ring the parts are clamped and held securely in proper relative positions. The top ring N receives the hood 0, which latter closes the f uel-opening in a practically air-tight manner and prevents the ingress of air or the egress of smoke.

It is evident that many slight changesmight be resorted to in the relative arrangement of parts herein shown and described without departing from the spirit and scope of my invention. Hence I would have it understood that I .do not wish to limit myself to the exact construction of parts herein shown and described; but,

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a stove, the combination with a firepot and a sheet-metal jacket, of a draft-flue interposed between the jacket and the pot and secured against the adjacent faces of both thus forming a brace and a spacing-block, an air-ingress opening through the jacket into the top of the flue, an air-egress opening from the bottom of the flue leading into the firepot, a damper-plate secured to the jacket and surrounding the air-ingress opening and a damper for closing the opening in the damperplate, substantially as set forth.

2. In a stove, the combination with a firepot closed at its bottom and a sheet-metal jacket open at its bottom, of a draft-flue interposed between the jacket and pot and secured against the adjacent faces of both, thus acting as a brace and a spacing-block, airingress opening through the jacket into the draft-flue near the top of the latter, an airegress opening from the flue near the base into the fire-pot and a damper for closing the inlet-opening to the flue, substantially as set forth.

3. The combination with a sheet-metal firepot and a sheet-metal jacket, of the cast-metal draft-flue interposed between the jacket and pot, air-ingress opening near the top of the flue, air-egress opening near the base of the flue,a reinforcing-plate surrounding the draftopening in the fire-pot, a damper-plate surrounding the air-ingress opening in the jacket and a damper.

4. The combination with a fire-pot and a jacket of a smoke-flue comprising a sleeve having a flange adapted to rest against the fire-pot, a spacing-collar resting on said flange and against the inner face of the jacket and bolts securing all of said parts together, substantially as set forth.

5. The combination with a fire-pot and a jacket, of a smoke-flue comprising a sleeve having a flange adapted to rest against the fire-pot, a spacing-collar resting on said flange and against the inner face of the jacket, a reinforcin g-rin g resting against the inner face of the fire-pot, a reinforcing-ring resting against the outer faceof the jacket and bolts or screws connecting all of said parts.

6. The combination with a fire-pot and a ERNST I'I. IIUENEFELD.

Witnesses:

M. OoUeHLnv, GUsTAv B. WITNER. 

